It has nothing to do with challenge. It has everything to do with balance. Thus my post in the other thread that offended you so.
And as for the rest of that idiotic post, I just added some "challenge" to my gameplay by experiencing this while soloing a +4 MLTF.
Love to know how he manages that through capped Smash resists and 65% Nrg resist. Regardless, the faceplant meant no win for me.
@BillyMailmanHelped me figure it out. Aeon's unstoppable came back up, giving him a 160% damage buff, his clone had a 30% resistance debuff on me, and the rest is licking the floor.